Recruiting

Observational Study

Sponsor:

Duke University

Code:

NCT05438199

Conditions

Waste Output

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Accepted

Interventions

Toilet seat that measures waste output

Study Details

Brief summary:

The purpose of this study is to test an electronic apparatus for measuring stool and urine output in an accurate and easy way. Participants will have one in-person or virtual visit with the study team prior to starting the study events. Participants that enroll in this study will have the freedom to choose when to begin and stop using the toilet apparatus when it is available for human testing. This apparatus will be located in a private bathroom in either the CIEMAS building or MSRB III Building.

Conditions

Waste Output

Study ID

NCT05438199

Start date

Nov 14, 2022

Status verified date

Aug, 2026

Completion date

Jul, 2027

Anticipated

Primary completion date

Jul, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Accepted

Inclusion Criteria:

  • people who are able to use the private bathroom at no risk to themselves in the CIEMAS building (B508) or the bathroom located in room 4002, 4th floor of MSRB3.
  • students or employees at Duke University since card access is required for our MSRB3 bathroom.
  • people who spend most of their time in these buildings so we can assure the use of the toilet.
  • If the recruitment number is slow, enrollment will include people from the closest buildings.

Exclusion Criteria:

  • People who use wheelchairs or other mobility devices won't be able to enroll, since at this moment the bathroom is not compliant with the requirements on The Americans with Disabilities Act (ADA) of 1990.

Study Design

Enrollment

48 participants

Anticipated

Intervention Model

Single group

Primary purpose

Other

Interventions and Outcome Measures

Arms

experimental: apparatus use

All participants will use the apparatus following the same procedures. They will weigh themselves on a scale located in the bathroom, use the apparatus with or without "hats" ("hats" refer to a plastic container used to catch stool/urine that needs to be placed between the toilet rim and the toilet seat and discarded after each use) and weigh themselves after using the toilet.

Interventions

Toilet seat that measures waste output

Participants will use a toilet that includes a apparatus designed to measure waste output.

Primary outcome measure

  • Percent of urine output correctly identified as measured by toilet seat apparatus . [ Time Frame: Up to 3 months ]
  • Percent of stool output correctly identified as measured by toilet seat apparatus . [ Time Frame: Up to 3 months ]

Central Contacts and Locations

Central contacts

Lawrence David

919-668-5388lawrence.david@duke.edu

Veronica Carrion

9197041523vmp19@duke.edu

Locations

Duke University

Recruiting

Durham, North Carolina, United States, 27708

Contacts

Veronica Palacios

9197041523veronica.palacios@duke.edu

Principal Investigator:

Lawrence David

More Information

Sponsor

Duke University

Last update posted

Aug 12, 2026

Last verified

Aug, 2026

Keywords

  • urine output
  • stool output

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by Duke University on 2026-08-12.